Find the missing number: 2, 6, 12, 20, 30, ?
Question 1
Q1. Find the missing number: 2, 6, 12, 20, 30, ?
Answer: 42
Explanation: The gaps between terms grow by 2 each time (4, 6, 8, 10). The next gap is 12, so 30 plus 12 equals 42.